GUnE : LIST OF HELICOID LAND SHELLS. 



wider than high ; peristome thin, acute, the margins convergent ; upper 

 and lower margins gently curved, united by a thin callus; outer round; 

 columellar ascending, slightly dilated over the narrow perforation of 

 the umbilicus. 



Diam. maj. 12, min. io"5 ; alt. 5*5 millim. 



Hah. — Tian-Shan Mountains, Russian Turkistan. 

 From Mr. Preston I received two specimens with the MS. name 

 " Macrorhlami/s roelii/ena, Mart." Professor von Martens, to whom I 

 submitted a speciuien, informs me that the new species is allied to 

 J/. !<oi]dia/ia, and that he saw a specimen in Mr. Rolle's collection for 

 which he suggested the name M. coelicola, in allusion to the native 

 name Tian-Shan meaning Celestial Mountains. To prevent confusion 

 I have retained the name roe/igena, as the shells have been distributed 

 under that name. 



MarrocliJamyx coelvjena differs from M. so(/diana, Mts., by its 

 smaller size, its more depresssed shape, and its more flattened whorls ; 

 the umbilical region is more excavated and the last whorl is less 

 widened towards the mouth. The shell is also thinner in texture than 

 that of M. xof/tliana which, moreover, is opaque not translucent. 



Family Zonitidae. 

 Subfamily Maeroehlaminae. 

 Genus Macrochlamys, Bens, 

 sogdiana, Mart. Sarafschan ; 

 Ferghana ; Taschkent ; 

 Samarkand, 

 coeligena, n.sp. Tian-Shan. 

 turanica, Mart. Sarafschan ; 



Kokand; Ferghana; Khiva, 

 clessini, West. Issik-Kul,Alatau. 



= schmidti, Cless. 

 schmidti, Brancs. Turcomania. 

 korschinskyi. West. Kugart 

 and Taldyk-ssu Rivers. 

 Sub-family Zonitinae. 

 Genus Vitrina, Drap. 



alexandri, AVest. Iskander-Kul. 

 rugulosa. Mart. Iskander-Kul. 

 conoidea. Mart. Sarafschan ; 



Ferghana, 

 raddei, Boettg. Kopet Dagh. 

 Genus Zonites, Montf. 

 corax, Pfr. Samarkand. 



latissimus, Dohrn. Samarkand. 

 Genus Euconulus, Reinh. 



fulvus, Drap. Iskander-Kul, 

 Sub-family Ariophantinae 

 Genus ZoNiTOiDES, Lehmann. 



nitidus, Miill. Turcomania. 

 Family Endodontidae. 

 Genus Punctum, Morse. 



pygmaeum, Drap. Kultuk, 

 Transcaspia. 

 P\amily Helieidae 

 Group Belogona, v. Iher. 



Belogona Euadenia, Pils. 

 Genus Cathaica, Mdff 

 Sub-genus Pliocathaica, Andr. 

 phaeozona, Mart. Ferghana; 



Tian-Shan. 

 rubens, Mart. Sarafschan 

 V. finschiana, Mart. Alatau 

 V. zeiliana, Mart. Alatau. 

 V. caryodes. West. Kugart 

 and Baskan Rivers; 

 Lepsinsk. 



